You're the one that created the offset confusion originally and why I asked for clarification...haha

With an 11et20 I'm surprised you were able to run a 295 on the R! Are you using the stock suspension at the stock ride height? How much rear camber are you running?

If you want to run a 305 without rubbing (assuming non-stock ride height, reasonable rear camber) the offset for an 11" wide wheel should be between 30 to 33. Personally, I don't think you can run a 305 on an 11et20 wheel without significant rubbing! However, perhaps I'm wrong...

You're the one that created the offset confusion originally and why I asked for clarification...haha

With an 11et20 I'm surprised you were able to run a 295 on the R! Are you using the stock suspension at the stock ride height? How much rear camber are you running?

If you want to run a 305 without rubbing (assuming non-stock ride height, reasonable rear camber) the offset for an 11" wide wheel should be between 30 to 33. Personally, I don't think you can run a 305 on an 11et20 wheel without significant rubbing! However, perhaps I'm wrong...

These are somewhat close to the offsets of the wheels that I ordered. Rolf is right, you are prob going to need an offset in the 30s to run a 305. I plan on running a 275/30 and 295/30. I think you should be fine w/ those sizes.

Ok - that makes sense because a 275/30-19 has a 0.2" smaller diameter than the stock 245/35-19. If you run a F tire that is slightly larger in diameter than the stock F diameter then it will most likely rub, however, not on all cars (depends on fender liner tolerance).